@book{489,
	author = {Clifford, Sarah Hutchinson. and Sawyer, Stacey C.},
	title = {Microcomputer essentials /},
	publisher = {R.D. Irwin,},
	year = {�1993.},
	series = {Irwin advantage series for computer education},
	address = {Homewood, IL :},
	note = {Includes index.}
}